Self-pressing side tube plate sealing structure of a casing structure device
By using a self-pressurized side tube sheet sealing structure, the sealing is enhanced by fluid pressure, which solves the problems of easy seal failure and insufficient pressure bearing in sleeve structure equipment, and achieves a high-efficiency and low-cost sealing solution.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- TAIZHOU KAITAO NEW MATERIALS CO LTD
- Filing Date
- 2026-03-16
- Publication Date
- 2026-07-10
AI Technical Summary
Existing casing structure equipment has problems such as easy seal failure, insufficient pressure bearing capacity and high cost. Especially under high pressure and corrosive conditions, the O-ring wears out severely, resulting in expensive equipment and unreliable seals.
It adopts a self-pressurized side tube sheet sealing structure, which uses fluid pressure to enhance the seal. Through plate-shaped sealing gaskets and anti-corrosion sealing rings, a double sealing fit is achieved between the inner tube and the outer base tube. Soft PTFE materials and anti-corrosion alloy plates are used to enhance the sealing performance and pressure resistance.
It significantly improves sealing performance and pressure resistance, enabling it to withstand pressures of tens to hundreds of kilograms, reducing equipment costs, extending service life, and reducing the use of expensive materials.
Smart Images
Figure CN122359533A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of sealing structures for shell-and-tube equipment, and more particularly to a self-pressurized side tube sheet sealing structure for a shell-and-tube heat exchanger. Background Technology
[0002] Currently, for equipment with sleeve structures that cannot be welded, the mainstream sealing method is the O-ring mechanical seal. For example, the sealing method for heat exchangers or delivery pipelines involves directly fitting the O-ring onto the inner tube, then inserting the entire assembly into the tube sheet bore. Tightening hollow studs into the tube sheet bore compresses the O-ring, creating a mechanical seal between the O-ring, the inner tube, and the tube sheet bore. This method has the following main drawbacks: 1. Because the inner tube must withstand not only the compressive force of the O-ring but also the pressure of the external medium, the strength requirements for the inner tube are significantly increased.
[0003] 2. Due to thermal expansion and contraction, displacement inevitably occurs between the inner and outer tubes, causing high-intensity hard friction on the sealing O-ring, which makes the sealing method very prone to failure.
[0004] 3. Due to the two reasons mentioned above, this sealing method cannot withstand high pressure. Higher pressure requires greater stud tightening force, which in turn causes the O-ring to wear more easily, necessitating further strengthening of the inner tube. This creates a pressure bottleneck, resulting in low pressure-bearing capacity.
[0005] 4. In particular, the operating media in this type of sleeve structure are often corrosive, which requires the tube sheet, O-rings, and studs to be made of corrosion-resistant materials. For example, current silicon carbide heat exchangers mostly use molded FEP tube sheets and perfluoroether O-rings, which are extremely expensive materials and require high-precision drilling and tapping. This makes the equipment very expensive. Summary of the Invention
[0006] This invention provides a self-pressurized side tube sheet sealing structure for a shell-and-tube heat exchanger, which not only further improves the sealing performance at both ends of the heat exchanger, but also solves the pressure-bearing capacity between the heat exchange tubes and the sealing device, while also reducing costs.
[0007] This invention adopts the following technical solution: a self-pressurized side tube sheet sealing structure for a sleeve structure device. The sleeve structure device includes an inner tube assembly and an outer base tube from the inside out. The inner tube assembly is axially placed inside the outer base tube. Both ends of the inner tube assembly are open. Flanges are provided on both sides of the outer base tube. A support baffle is installed on each flange. The two support baffles are symmetrically arranged. The positions of the support holes on the surfaces of the two support baffles correspond to the positions of the inner tubes of the inner tube assembly. Both ends of the inner tube assembly are inserted into the corresponding support holes and fixedly installed in the support holes, so that both ends of the inner tube assembly are supported by the two support baffles. A plate-shaped seal is provided on the outer surface of each support baffle. The two plate-shaped sealing gaskets are separately provided from the corresponding support baffles. The plate-shaped sealing gasket is tightly attached to the support baffle on the corresponding side and supported by the support baffle. The plate-shaped sealing gasket has sealing installation holes at positions corresponding to the support holes of the support baffle. The outer edge of each sealing installation hole extends horizontally in the axial direction to form a sealing sleeve. Each sealing sleeve and the plate-shaped sealing gasket are integral structures. After being supported by the two support baffles, both ends of the inner tube assembly are inserted into the corresponding sealing installation holes. At the same time, the sealing sleeve on the sealing installation hole is tightly attached to the corresponding inserted inner tube assembly. A sealing ring is provided on each sealing sleeve. A corrosion-resistant sealing ring fixing component is provided on the sealing ring. The corrosion-resistant sealing ring fixing component fixes the sealing ring. After the sealing ring is fixed, a double sealing fit is formed between the sealing ring and the sealing sleeve, which can seal the inner tube assembly and the outer base tube.
[0008] Furthermore, when the inner tube assembly of the present invention is configured as a single inner tube, each of the two support baffles is provided with a single support hole, and each of the two plate-shaped sealing gaskets is provided with a single sealing installation hole. The two ends of the single inner tube are respectively inserted into the support holes of the two support baffles and fixedly installed in the corresponding support holes, and then inserted into the corresponding sealing installation holes. The sealing sleeve provided in the sealing installation hole is fitted on the inserted single inner tube and closely attached to the single inner tube. The sealing ring is located outside the sealing sleeve. The anti-corrosion sealing ring fixing component fixes the sealing ring and squeezes the sealing sleeve.
[0009] Furthermore, the anti-corrosion sealing ring fastener of the present invention includes an anti-corrosion jacket. An installation groove I is provided on the outer side of the flange. A support baffle, a plate-shaped sealing gasket, and the anti-corrosion jacket are sequentially installed in the installation groove I from the inside out. The anti-corrosion jacket is fitted onto the sealing sleeve. The sealing ring is a circular sealing ring, and an anti-corrosion sealing plate I is provided outside the circular sealing ring. The anti-corrosion sealing plate I is also located inside the anti-corrosion jacket. The anti-corrosion sealing plate I is a glass plate, an anti-corrosion alloy plate, or a ceramic plate. A sealing ring fixing hole I is opened at the center of the anti-corrosion sealing plate I. After the circular sealing ring is inserted into the sealing ring fixing hole I, it is fixed and clamped inside the anti-corrosion jacket by the pressure of the anti-corrosion sealing plate I. After the circular sealing ring is clamped, a double sealing fit for the single inner pipe is achieved through the anti-corrosion jacket and the sealing sleeve. A fixing ring is fitted around the periphery of the anti-corrosion sealing plate I, and the anti-corrosion sealing plate is fixed by the fixing ring.
[0010] Furthermore, the anti-corrosion sealing ring fixing component of the present invention is configured as an anti-corrosion sealing plate II. The outer side of the flange is provided with an installation groove II. The support baffle, the plate-shaped sealing gasket, and the anti-corrosion sealing plate II are installed in the installation groove II from the inside to the outside. The anti-corrosion sealing plate II is a glass plate, an anti-corrosion alloy plate, a ceramic plate, or a metal gasket with an anti-corrosion coating on the outside. A sealing ring fixing hole II is opened in the center of the anti-corrosion sealing plate II. The sealing ring is configured as a circular sealing ring. The circular sealing ring is fitted on the sealing sleeve. The sealing ring fixing hole II of the anti-corrosion sealing plate II is fitted on the circular sealing ring. The part of the hole wall of the sealing ring fixing hole II that contacts the circular sealing ring is chamfered. After the circular sealing ring is inserted into the sealing ring fixing hole II, it is squeezed by the chamfer of the sealing ring fixing hole II and fixed and clamped. The circular sealing ring then presses the sealing sleeve to achieve a double sealing structure for a single inner tube.
[0011] Furthermore, the sealing ring of the present invention is a strip sealing ring, the anti-corrosion sealing ring fixing component is a pressure plate, the sealing sleeve is located in the mounting groove III of the flange, the sealing sleeve is divided into an upper sleeve body and a lower sleeve body through a middle partition, the strip sealing ring is located in the middle partition, the pressure plate is embedded between the upper sleeve body and the inner wall of the mounting groove III, the lower sleeve body is fitted on the single inner tube, and the pressure plate presses down on the upper sleeve body and the strip sealing ring in sequence, so that the strip sealing ring presses the lower sleeve body to form a double sealing structure for the single inner tube.
[0012] Furthermore, the outer side of the anti-corrosion sealing plate II of the present invention is connected to a mating part. A mating fixing ring is inserted between the inner support baffle, the plate-shaped sealing gasket and the upper part of the anti-corrosion sealing plate II and the interior of the mounting groove II. After the mating fixing ring is inserted, the mating part is clamped and fixed by the vertical stop provided on the mating fixing ring.
[0013] Furthermore, when the inner tube assembly of the present invention includes several inner tubes, several support holes are respectively provided on the two support baffles, and several sealing installation holes are correspondingly provided on the plate-shaped sealing gasket. The positions of the inner tubes and the positions of the support holes correspond to the positions of the sealing installation holes. The two ends of each inner tube are respectively inserted into the corresponding support holes on the two support baffles and fixedly installed in the support holes, and then inserted into the corresponding sealing installation holes. The sealing sleeve on the sealing installation hole is fitted on the corresponding inserted inner tube and closely adheres to the inner tube. A sealing ring is embedded in the sealing sleeve, and the sealing ring is fixed inside the sealing sleeve by the anti-corrosion sealing ring fixing member.
[0014] Furthermore, in this invention, each plate-shaped sealing gasket is located outside the corresponding support baffle. The anti-corrosion sealing ring fixing component includes an outer sealing ring protection plate and an inner sealing fixing plate I. The sealing ring is a circular sealing ring, which is embedded in the fixing hole I of the sealing fixing plate I. The sealing fixing plate I fixes and clamps the circular sealing ring by squeezing it. The circular sealing ring then presses the sealing sleeve to achieve a double sealing structure on the outer side of the inner tube, thereby sealing the outer side of the support baffle. The outer sealing ring protection plate confines the circular sealing ring inside the sealing sleeve. An inner support tube plate is also provided on the inner side of the support baffle. An external threaded iron thread sleeve is fitted on the outer side of the inner support tube plate, and an inner circular sealing ring is fitted on the outer side of the external threaded iron thread sleeve. The inner circular sealing ring can seal the inner side of the support baffle.
[0015] Furthermore, each inner tube of this invention is fitted with a bidirectional double self-sealing device, which includes an inner sealing device and an outer sealing device. A support baffle II is provided between the inner and outer sealing devices. The outer sealing device includes two sealing sleeves connected in series, and an outer circular sealing ring is embedded in each sealing sleeve. The outer circular sealing ring is embedded in a fixing hole II provided in the outer sealing fixing plate II. The outer sealing fixing plate II fixes and clamps the outer circular sealing ring by pressing it, and the outer circular sealing ring then presses the sealing sleeve to achieve a seal on the outside of the inner tube. An outer sealing ring protection plate is provided on the outside of the outer sealing fixing plate II to protect the outer sealing ring. The protective plate confines the outer circular sealing ring within the sealing sleeve. The outer ring of the outer sealing ring protection plate is provided with a limiting plate. The inner side of the limiting plate presses against the outer ring of the outer sealing ring protection plate. The inner sealing device includes two sealing sleeves connected in series. An inner circular sealing ring is embedded in each sealing sleeve. The inner circular sealing ring is embedded in the inner sealing fixing plate III, which has a fixing hole III. The sealing fixing plate III fixes and clamps the inner circular sealing ring by squeezing it. The inner circular sealing ring then presses the sealing sleeve to achieve a seal on the inner side of the inner tube. An inner sealing ring protection plate is provided on the inner side of the inner sealing fixing plate, which confines the inner circular sealing ring within the sealing sleeve.
[0016] Furthermore, the present invention provides a tie rod reinforcement device between the inner tubes. The tie rod reinforcement device includes a countersunk stud and a support tube plate III. The inner hole of the support tube plate III is fitted onto the corresponding inner tube. The head of the countersunk stud is installed in two adjacent support tube plates III. A threaded sleeve is embedded in the inner hole of the support tube plate III. An O-ring washer is embedded in the threaded sleeve. A sealing gasket is provided between the head of the countersunk stud and the support tube plate III. The tail of the countersunk stud is connected to one end of the tie rod through an internal thread.
[0017] Furthermore, in this invention, each plate-shaped sealing gasket is located on the outside of the corresponding support baffle. The anti-corrosion sealing ring fixing component includes an anti-corrosion ring fixing sleeve. The anti-corrosion ring fixing sleeve can be made of stainless steel, glass, ceramic, Hastelloy, titanium alloy, zirconium alloy, or metal-coated PTFE. The sealing ring is a circular sealing ring, which is embedded in the anti-corrosion ring fixing sleeve. The anti-corrosion ring fixing sleeve fixes and clamps the circular sealing ring by squeezing it. The circular sealing ring then presses the sealing sleeve to achieve a double sealing structure on the outside of the inner tube, thereby sealing the outside of the support baffle.
[0018] Furthermore, the plate-shaped sealing gasket of the present invention is made of soft PTFE material, and the sealing sleeve is configured as two or more layers of PTFE material film, with the thickness of each film layer being less than or equal to 0.5 mm.
[0019] The present invention has the following beneficial effects: By employing the technical solution of the present invention, a plate-shaped sealing gasket is used, which can strengthen the sealing of the sealing sleeve of the plate-shaped sealing gasket by means of the fluid's own pressure. This not only further improves the sealing performance at both ends of the heat exchanger, but also solves the pressure-bearing problem between the heat exchange tube and the sealing device, enabling it to withstand pressures of tens to hundreds of kilograms, resulting in a geometric increase in pressure resistance. The present invention not only further improves the sealing performance at both ends of the heat exchanger, but also solves the pressure-bearing capacity problem between the heat exchange tube and the sealing device, while also reducing costs.
[0020] The sealing sleeve used in this invention consists of two or more layers, each with a thickness not exceeding 0.5 mm. The inner sealing sleeve can also be configured with two or more layers, each with a thickness not exceeding 0.5 mm. This further enhances the tightness of the fit between the sealing sleeve and the heat exchange tube, improving sealing performance and geometrically reducing the use of expensive materials. The invention employs tie rods between the support plates to prevent deformation, allowing the outer side of the sealing component to use high-strength ceramic or glass components. This gives the device extremely strong erosion resistance, significantly protecting the corrosion-resistant PTFE material and extending its service life. Due to the use of a sealing sleeve, this invention allows for a more compact internal tube arrangement compared to traditional mechanical seals, reducing both the space occupied by the equipment and further lowering costs. In summary, this invention improves the sealing capacity of the equipment several times over, significantly reduces its size, and substantially lowers costs. The soft PTFE material used in this invention is relatively thin. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention.
[0023] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of the present invention.
[0024] Figure 3 This is a schematic diagram of the structure of Embodiment 3 of the present invention.
[0025] Figure 4 This is a schematic diagram of the structure of the present invention with a docking component.
[0026] Figure 5 This is a schematic diagram of the structure of the anti-corrosion layer metal pad used in this invention.
[0027] Figure 6 This is a schematic diagram of the structure of Embodiment 4 of the present invention.
[0028] Figure 7 This is a structural schematic diagram of Embodiment 5 of the present invention.
[0029] Figure 8 This is a schematic diagram of the structure of the present invention with a tie rod reinforcement device.
[0030] Figure 9 This is a schematic diagram of the structure of Embodiment Six of the present invention. Detailed Implementation
[0031] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.
[0032] Example 1, in Figure 1This invention provides a self-pressurized side tube sheet sealing structure for a casing structure device. The casing structure device includes an inner tube assembly and an outer base tube 1 from the inside out. The inner tube assembly is axially placed inside the outer base tube 1, and both ends of the inner tube assembly are open. Flanges 2 are provided on both sides of the outer base tube 1, and a support baffle 3 is installed on each flange 2. The two support baffles 3 are symmetrically arranged, and the positions of the support holes 4 on the surface of the two support baffles 3 correspond to the positions of the inner tube of the inner tube assembly. The two ends of the inner tube assembly are respectively inserted into the corresponding support holes 4 and fixedly installed in the support holes 4, so that the two ends of the inner tube assembly... Supported by two support baffles 3, each support baffle 3 has a plate-shaped sealing gasket 5 on its outer surface. The plate-shaped sealing gasket 5 is made of soft PTFE material. The two plate-shaped sealing gaskets 5 are set separately from the corresponding support baffles 3. The plate-shaped sealing gaskets 5 are tightly attached to the support baffles 3 on the corresponding side and supported by the support baffles 3. The plate-shaped sealing gaskets 5 have sealing installation holes 5 at positions corresponding to the support holes 4 of the support baffles 3. The outer edge of each sealing installation hole 5 extends horizontally in the axial direction to form a sealing sleeve 6. The sealing sleeve 6 is made of two or more layers of PTFE material film, and the thickness of each film is less than or equal to 0.5 mm thick, each sealing sleeve 6 and plate-shaped sealing gasket 5 are integral structures. After being supported by two support baffles 3, both ends of the inner tube assembly are inserted into the corresponding sealing mounting holes 5. At the same time, the sealing sleeve 6 on the sealing mounting hole 5 is tightly attached to the corresponding inserted inner tube assembly. A sealing ring is provided on each sealing sleeve 6. A corrosion-resistant sealing ring fixing component is provided on the sealing ring 7. The corrosion-resistant sealing ring fixing component fixes the sealing ring 7. After the sealing ring 7 is fixed, a double sealing fit is formed between it and the sealing sleeve 6, which can seal the inner tube assembly and the outer base tube 1. When the inner tube assembly in this embodiment is set as a single inner tube 8, each of the two support baffles 3 is provided with a single support hole 4, and each of the two plate-shaped sealing gaskets 5 is provided with a single sealing mounting hole 5. Both ends of the single inner tube 8 are inserted into the support holes 4 of the two support baffles 3 and fixedly installed in the corresponding support holes 4, and then inserted into the corresponding sealing mounting hole 5. The sealing sleeve 6 provided in the sealing mounting hole 5 is fitted on the inserted single inner tube 8 and tightly attached to the single inner tube 8. The sealing ring 7 is located outside the sealing sleeve 6. The anti-corrosion sealing ring fastener fixes the sealing ring 7 and compresses the sealing sleeve 6. In this embodiment, the anti-corrosion sealing ring fastener includes an anti-corrosion jacket 9. The outer side of the flange 2 is provided with an installation groove I10. The support baffle 3, the plate-shaped sealing gasket 5, and the anti-corrosion jacket 9 are installed sequentially from the inside to the outside in the installation groove I10. The anti-corrosion jacket 9 is fitted onto the sealing sleeve 6. The sealing ring 7 is set as a circular sealing ring. An anti-corrosion sealing plate I11 is provided outside the circular sealing ring. The anti-corrosion sealing plate I11 is also located inside the anti-corrosion jacket 9. The sealing plate I11 is made of glass, corrosion-resistant alloy, or ceramic. A sealing ring fixing hole I12 is located at the center of the corrosion-resistant sealing plate I11. After the circular sealing ring is inserted into the fixing hole I12, it is pressed and secured within the corrosion-resistant jacket 9 by the corrosion-resistant sealing plate I11. The circular sealing ring, after being secured, achieves a double-seal fit between the corrosion-resistant jacket 9 and the sealing sleeve 6 for the single inner tube 8. A fixing ring 13 is fitted around the periphery of the corrosion-resistant sealing plate I11, securing it in place. When fluid flows into the single inner tube 8 in Embodiment 1, this invention can strengthen the seal of the sealing sleeve 6 of the plate-shaped sealing gasket 5 using the fluid's own pressure. The enhanced seal by the circular sealing ring improves the sealing performance at both ends of the sleeve structure equipment and solves the pressure-bearing problem between the single inner tube 8 and the sealing device, enabling it to withstand pressures of tens to hundreds of kilograms.
[0033] Example 2, in Figure 2 , Figure 4 and Figure 5This invention provides a self-pressurized side tube sheet sealing structure for a casing structure device. The casing structure device includes an inner tube assembly and an outer base tube 1 from the inside out. The inner tube assembly is axially placed inside the outer base tube 1, and both ends of the inner tube assembly are open. Flanges 2 are provided on both sides of the outer base tube 1, and a support baffle 3 is installed on each flange 2. The two support baffles 3 are symmetrically arranged, and the positions of the support holes 4 on the surface of the two support baffles 3 correspond to the positions of the inner tube of the inner tube assembly. The two ends of the inner tube assembly are respectively inserted into the corresponding support holes 4 and fixedly installed in the support holes 4, so that the two ends of the inner tube assembly... Supported by two support baffles 3, each support baffle 3 has a plate-shaped sealing gasket 5 on its outer surface. The plate-shaped sealing gasket 5 is made of soft PTFE material. The two plate-shaped sealing gaskets 5 are set separately from the corresponding support baffles 3. The plate-shaped sealing gaskets 5 are tightly attached to the support baffles 3 on the corresponding side and supported by the support baffles 3. The plate-shaped sealing gaskets 5 have sealing installation holes 5 at positions corresponding to the support holes 4 of the support baffles 3. The outer edge of each sealing installation hole 5 extends horizontally in the axial direction to form a sealing sleeve 6. The sealing sleeve 6 is made of two or more layers of PTFE material film, and the thickness of each film is less than or equal to 0.Each sealing sleeve 6 is 5 mm thick and is integral with the plate-shaped sealing gasket 5. In this embodiment, the direction of the sealing sleeve 6 is the direction of the sealed medium. After being supported by two support baffles 3, both ends of the inner tube assembly are inserted into the corresponding sealing mounting holes 5. At the same time, the sealing sleeve 6 on the sealing mounting hole 5 is tightly attached to the corresponding inserted inner tube assembly. A sealing ring is provided on each sealing sleeve 6. A corrosion-resistant sealing ring fixing component is provided on the sealing ring 7. The corrosion-resistant sealing ring fixing component fixes the sealing ring 7. After the sealing ring 7 is fixed, a double sealing fit is formed between it and the sealing sleeve 6, which can seal the inner tube assembly and the outer base tube 1. In this embodiment, when the inner tube assembly is configured as a single inner tube 8, each of the two support baffles 3 has a single support hole 4, and each of the two plate-shaped sealing gaskets 5 has a corresponding single sealing mounting hole 5. Both ends of the single inner tube 8 are inserted into the support holes 4 of the two support baffles 3 and fixedly installed within the corresponding support holes 4, and then inserted into the corresponding sealing mounting hole 5. The sealing sleeve 6 provided in the sealing mounting hole 5 is fitted onto the inserted single inner tube 8 and tightly adheres to it. The sealing ring 7 is located outside the sealing sleeve 6. The anti-corrosion sealing ring fixing component fixes the sealing ring 7 and compresses the sealing sleeve 6. This embodiment uses an anti-corrosion sealing ring fixing... The component is configured as an anti-corrosion sealing plate II14. An installation groove II15 is provided on the outer side of the flange 2. The support baffle 3, the plate-shaped sealing gasket 5, and the anti-corrosion sealing plate II14 are installed sequentially from the inside out within the installation groove II15. The anti-corrosion sealing plate II14 is a glass plate, an anti-corrosion alloy plate, a ceramic plate, or a metal gasket 49 with an anti-corrosion coating. A sealing ring fixing hole II16 is opened in the center of the anti-corrosion sealing plate II14. The sealing ring 7 is a circular sealing ring, fitted onto the sealing sleeve 6. The sealing ring fixing hole II16 of the anti-corrosion sealing plate II14 fits onto the circular sealing ring, and the wall of the sealing ring fixing hole II16 is flush with the circular sealing ring. The contact portion has a chamfer 17. After the circular sealing ring is inserted into the sealing ring fixing hole II 16, it is pressed and fixed by the chamfer 17 of the sealing ring fixing hole II 16. The circular sealing ring then presses the sealing sleeve 6 to achieve a double sealing structure for the single inner tube 8. In this embodiment, the outer side of the anti-corrosion sealing plate II 14 is connected to the docking part 23. The inner support baffle 3, the plate-shaped sealing gasket 5, and the upper part of the anti-corrosion sealing plate II 14 are inserted between the mounting groove II 15 and the docking fixing ring 24. After the docking fixing ring 24 is inserted, the docking part 23 is fixed by the vertical stop 25 provided on the docking fixing ring 24. When fluid medium flows into the single inner tube 8 in Embodiment 2, the present invention can strengthen the sealing of the sealing sleeve 6 of the plate-shaped sealing gasket 5 by means of the fluid's own pressure, and improve the sealing performance at both ends of the sleeve structure equipment through the enhanced sealing of the circular sealing ring. It can also solve the pressure problem between the single inner tube 8 and the sealing device, enabling it to withstand pressures of tens to hundreds of kilograms.
[0034] Example 3, in Figure 3This invention provides a self-pressurized side tube sheet sealing structure for a sleeve structure device. The sleeve structure device includes an inner tube assembly and an outer base tube 1 from the inside out. The inner tube assembly is axially placed inside the outer base tube 1, and both ends of the inner tube assembly are open. Flanges 2 are provided on both sides of the outer base tube 1, and support baffles 3 are installed on each flange 2. The two support baffles 3 are symmetrically arranged, and the positions of the support holes 4 on the surface of the two support baffles 3 correspond to the positions of the inner tube of the inner tube assembly. The two ends of the inner tube assembly are respectively inserted into the corresponding support holes 4 and fixedly installed in the support holes 4, so that the two ends of the inner tube assembly are supported by the two support baffles 3. A plate-shaped sealing gasket 5 is provided on the outer surface of each support baffle 3. The plate-shaped sealing gasket 5 is made of soft PTFE material. The plate-shaped sealing gasket 5 and the corresponding support baffle 3 are set separately. The plate-shaped sealing gasket 5 is tightly attached to the support baffle 3 on the corresponding side and supported by the support baffle 3. The plate-shaped sealing gasket 5 has a sealing installation hole 5 at the position corresponding to the support hole 4 of the support baffle 3. The outer edge of each sealing installation hole 5 extends horizontally in the axial direction to form a sealing sleeve 6. The sealing sleeve 6 is set as two or more layers of PTFE material film, and the thickness of each film is less than or equal to 0.5 mm. Each sealing sleeve 6 and the plate-shaped sealing gasket 5 are integral structures. In this embodiment, the direction of the sealing sleeve 6 is the direction of the sealed medium. After being supported by the two support baffles 3, both ends of the inner tube assembly are respectively inserted into the corresponding sealing installation hole 5. At the same time, the seal on the sealing installation hole 5 The sleeve 6 is tightly fitted onto the corresponding inserted inner tube assembly. Each sealing sleeve 6 is provided with a corresponding sealing ring. A corrosion-resistant sealing ring fixing component is provided on the sealing ring 7. The corrosion-resistant sealing ring fixing component fixes the sealing ring 7. After the sealing ring 7 is fixed, a double sealing fit is formed between it and the sealing sleeve 6, which can seal the inner tube assembly and the outer base tube 1. In this embodiment, when the inner tube assembly is set as a single inner tube 8, each of the two support baffles 3 is provided with a single support hole 4, and each of the two plate-shaped sealing gaskets 5 is provided with a single sealing installation hole 5. The two ends of the single inner tube 8 are respectively inserted into the support holes 4 of the two support baffles 3 and fixedly installed in the corresponding support holes 4, and then inserted into the corresponding sealing installation 5. The sealing sleeve 6 provided in the sealing installation hole 5 is fitted onto the inserted single inner tube 8. The upper part is tightly attached to the single inner tube 8. The sealing ring 7 is located outside the sealing sleeve 6. After the anti-corrosion sealing ring fastener fixes the sealing ring 7, it squeezes the sealing sleeve 6. In this embodiment, the sealing ring 7 is set as a strip sealing ring. The anti-corrosion sealing ring fastener is set as a pressure plate 18. The sealing sleeve 6 is located in the mounting groove Ⅲ19 of the flange. The sealing sleeve 6 is divided into an upper sleeve body 21 and a lower sleeve body 22 through the middle partition 20. The strip sealing ring is located in the middle partition 20. The pressure plate 18 is embedded between the upper sleeve body 21 and the inner wall of the mounting groove Ⅲ19. The lower sleeve body 22 is fitted on the single inner tube 8. The pressure plate 18 squeezes the upper sleeve body 21 and the strip sealing ring downward in sequence, so that the strip sealing ring squeezes the lower sleeve body 21 to form a double sealing structure for the single inner tube 6.When a fluid medium flows into the single inner tube 8 in Example 3, the present invention can strengthen the sealing of the sealing sleeve 6 of the plate-shaped sealing gasket 5 by means of the fluid's own pressure, and improve the sealing performance at both ends of the sleeve structure equipment by strengthening the seal through the circular sealing ring. It can also solve the pressure problem between the single inner tube 8 and the sealing device, enabling it to withstand pressures of tens to hundreds of kilograms.
[0035] Example 4, in Figure 6This invention provides a self-pressurized side tube sheet sealing structure for a casing structure device. The casing structure device includes an inner tube assembly and an outer base tube 1 from the inside out. The inner tube assembly is axially placed inside the outer base tube 1, and both ends of the inner tube assembly are open. Flanges 2 are provided on both sides of the outer base tube 1, and a support baffle 3 is installed on each flange 2. The two support baffles 3 are symmetrically arranged, and the positions of the support holes 4 on the surface of the two support baffles 3 correspond to the positions of the inner tube of the inner tube assembly. The two ends of the inner tube assembly are respectively inserted into the corresponding support holes 4 and fixedly installed in the support holes 4, so that the two ends of the inner tube assembly are supported by the two support baffles 3. Each support baffle 3 has a plate-shaped sealing gasket 5 on its outer surface. The plate-shaped sealing gasket 5 is made of soft PTFE material. The two plate-shaped sealing gaskets 5 are set separately from the corresponding support baffles 3. The plate-shaped sealing gaskets 5 are tightly attached to the support baffles 3 on the corresponding side and supported by the support baffles 3. The plate-shaped sealing gaskets 5 have sealing installation holes 5 at positions corresponding to the support holes 4 of the support baffles 3. The outer edge of each sealing installation hole 5 extends horizontally in the axial direction to form a sealing sleeve 6. Each sealing sleeve 6 and the plate-shaped sealing gasket 5 are integral structures. The sealing sleeve 6 is set as two or more layers of PTFE material film, and the thickness of each film is less than or equal to 0.The inner tube assembly, with a diameter of 5 mm, is inserted into the corresponding sealing mounting hole 5 after being supported by two support baffles 3 at both ends. Simultaneously, the sealing sleeve 6 on the sealing mounting hole 5 is tightly fitted to the corresponding inserted inner tube assembly. Each sealing sleeve 6 is provided with a corresponding sealing ring, and a corrosion-resistant sealing ring fixing component is provided on the sealing ring 7. The corrosion-resistant sealing ring fixing component fixes the sealing ring 7, forming a double-seal fit between the sealing ring 7 and the sealing sleeve 6, thus sealing the inner tube assembly and the outer base tube 1. In this embodiment, when the inner tube assembly includes several inner tubes 26, the two support baffles... Each of the two support plates 3 has a plurality of support holes 4, and the plate-shaped sealing gasket 5 has a plurality of corresponding sealing mounting holes 5. In this embodiment, when the inner tube assembly includes nineteen inner tubes 26, each of the two support plates 3 has nineteen support holes 4, and the plate-shaped sealing gasket 5 has nineteen corresponding sealing mounting holes 5. The positions of the inner tubes 26 and the positions of the support holes 4 correspond to the positions of the sealing mounting holes 5. Both ends of each inner tube 6 are inserted into the corresponding support holes 4 on the two support plates 3 and fixedly installed in the support holes 4, and then inserted into the corresponding sealing mounting holes 5. The sealing sleeve 6 on the sealing mounting hole 5 is fitted onto the corresponding inserted inner tube 26 and fits tightly against the inner tube 26. A sealing ring 7 is embedded in the sealing sleeve 6. The sealing ring 7 is fixed inside the sealing sleeve 6 by an anti-corrosion sealing ring fixing component. In this embodiment, each plate-shaped sealing gasket 5 is located outside the corresponding support baffle 3. The anti-corrosion sealing ring fixing component includes an outer sealing ring protection plate 27 and an inner sealing fixing plate I 28. The sealing ring 7 is a circular sealing ring, which is embedded in the fixing hole I of the sealing fixing plate I 28. The sealing fixing plate I 28... 8. By compressing the circular sealing ring, the circular sealing ring is fixed and clamped. The circular sealing ring then presses the sealing sleeve 6, achieving a double-sealing structure on the outside of the inner tube 26, thereby sealing the outside of the support baffle 3. The outer sealing ring protection plate 27 confines the circular sealing ring within the sealing sleeve 6. An inner support tube plate 29 is also provided inside the support baffle 3. An external threaded iron screw sleeve 30 is fitted outside the inner support tube plate 29, and an inner circular sealing ring 31 is fitted outside the external threaded iron screw sleeve 30. The inner circular sealing ring 31 can seal the inside of the support baffle 6. When fluid medium flows into the multiple inner tubes 26 in Embodiment 4, the present invention can strengthen the sealing of the sealing sleeve 6 of the plate-shaped sealing gasket 5 by utilizing the fluid's own pressure. Through the enhanced sealing of the circular sealing ring, the sealing performance at both ends of the sleeve structure equipment is improved. It can also solve the pressure-bearing problem between the multiple inner tubes 26 and the sealing device, enabling them to withstand pressures of tens to hundreds of kilograms.
[0036] Example 5, in Figure 7This invention provides a self-pressurized side tube sheet sealing structure for a sleeve structure device. The sleeve structure device includes an inner tube assembly and an outer base tube 1 from the inside out. The inner tube assembly is axially placed inside the outer base tube 1, and both ends of the inner tube assembly are open. Flanges 2 are provided on both sides of the outer base tube 1, and a support baffle 3 is installed on each flange 2. The two support baffles 3 are symmetrically arranged, and the positions of the support holes 4 on the surface of the two support baffles 3 correspond to the positions of the inner tube of the inner tube assembly. The two ends of the inner tube assembly are respectively inserted into the corresponding support holes 4 and fixedly installed in the support holes 4, so that the two ends of the inner tube assembly are supported by the two support baffles 3. A plate-shaped sealing gasket 5 is provided on the outer surface of each support baffle 3. The plate-shaped sealing gasket 5 is made of soft PTFE material. The plate-shaped sealing gasket 5 is separately set from the corresponding support baffle 3 and is tightly attached to and supported by the support baffle 3 on the corresponding side. The plate-shaped sealing gasket 5 has sealing mounting holes 5 at positions corresponding to the support holes 4 of the support baffle 3. Each sealing mounting hole 5 forms a sealing sleeve 6 after its outer edge extends horizontally in the axial direction. Each sealing sleeve 6 and the plate-shaped sealing gasket 5 are integral structures. The sealing sleeve 6 is made of two or more layers of PTFE material membrane, each layer having a thickness of less than or equal to 0.5 mm. After being supported by the two support baffles 3, both ends of the inner tube assembly are inserted into the corresponding sealing mounting holes 5. Simultaneously, the sealing sleeve 6 on the sealing mounting hole 5 is tightly attached to the corresponding inserted inner tube assembly. A sealing ring is provided on each sealing sleeve 6. The 7 is equipped with an anti-corrosion sealing ring fixing component, which fixes the sealing ring 7. After the sealing ring 7 is fixed, it forms a double sealing fit with the sealing sleeve 6, which can seal the inner tube assembly and the outer base tube 1. When the inner tube assembly of this embodiment includes a plurality of inner tubes 26, a plurality of support holes 4 are respectively provided on the two support baffles 3, and a plurality of sealing installation holes 5 are correspondingly provided on the plate-shaped sealing gasket 5. When the inner tube assembly of this embodiment includes nineteen inner tubes 26, a plurality of support holes 4 are respectively provided on the two support baffles 3, and a plurality of sealing installation holes 5 are correspondingly provided on the plate-shaped sealing gasket 5. The positions of the inner tubes 26 and the positions of the support holes 4 correspond to the positions of the sealing installation holes 5. The two ends of each inner tube 6 are respectively inserted into the corresponding support on the two support baffles 3. The inner tube 26 is fixedly installed in the support hole 4 and then inserted into the corresponding sealing installation hole 5. The sealing sleeve 6 on the sealing installation hole 5 is fitted onto the corresponding inserted inner tube 26 and is tightly attached to the inner tube 26. A sealing ring 7 is embedded in the sealing sleeve 6. The sealing ring 7 is fixed inside the sealing sleeve 6 by an anti-corrosion sealing ring fixing component. In this embodiment, each inner tube 26 is fitted with a bidirectional double self-sealing device. The bidirectional double self-sealing device includes an inner sealing device and an outer sealing device. A support baffle II 32 is provided between the inner sealing device and the outer sealing device. The outer sealing device includes two sealing sleeves 6 connected in series. An outer circular sealing ring 33 is embedded in each sealing sleeve 6. The outer circular sealing ring 33 is embedded in the fixing hole II of the outer sealing fixing plate II 34.The outer sealing fixing plate II 34 presses against the outer circular sealing ring 33 to fix and clamp it. The outer circular sealing ring 33 then presses against the sealing sleeve 6 to achieve a seal on the outside of the inner tube 26. An outer sealing ring protection plate 36 is provided on the outside of the outer sealing fixing plate II 34. The outer sealing ring protection plate 36 confines the outer circular sealing ring 33 within the sealing sleeve 6. A limiting plate 37 is provided on the outer ring of the outer sealing ring protection plate 36. The inner side of the limiting plate 37 presses against the outer ring of the outer sealing ring protection plate 36. The inner sealing device includes two connected in series. The sealing sleeve 6 has an inner circular sealing ring 38 embedded within it. The inner circular sealing ring 38 is embedded in a fixing hole III in an inner sealing fixing plate III 48. The sealing fixing plate III 48 presses the inner circular sealing ring 38 to fix it tightly. The inner circular sealing ring 38 then presses the sealing sleeve 6 to achieve a seal on the inside of the inner tube 26. An inner sealing ring protection plate 39 is provided inside the inner sealing fixing plate 34, which confines the inner circular sealing ring 38 within the sealing sleeve 6. When fluid medium flows into the multiple inner tubes 26 in Embodiment 5, the present invention can strengthen the seal of the sealing sleeve 6 of the plate-shaped sealing gasket 5 by utilizing the fluid's own pressure. Through the enhanced seal of the circular sealing ring, the sealing performance at both ends of the sleeve structure equipment is improved. It can also solve the pressure-bearing problem between the multiple inner tubes 26 and the sealing device, enabling it to withstand pressures of tens to hundreds of kilograms.
[0037] Example 6, in Figure 9This invention provides a self-pressurized side tube sheet sealing structure for a casing structure device. The casing structure device includes an inner tube assembly and an outer base tube 1 from the inside out. The inner tube assembly is axially placed inside the outer base tube 1, and both ends of the inner tube assembly are open. Flanges 2 are provided on both sides of the outer base tube 1, and a support baffle 3 is installed on each flange 2. The two support baffles 3 are symmetrically arranged, and the positions of the support holes 4 on the surface of the two support baffles 3 correspond to the positions of the inner tube of the inner tube assembly. The two ends of the inner tube assembly are respectively inserted into the corresponding support holes 4 and fixedly installed in the support holes 4, so that the two ends of the inner tube assembly are supported by the two support baffles 3. Each support baffle 3 has a plate-shaped sealing gasket 5 on its outer surface. The plate-shaped sealing gasket 5 is made of soft PTFE material. The two plate-shaped sealing gaskets 5 are set separately from the corresponding support baffles 3. The plate-shaped sealing gaskets 5 are tightly attached to the support baffles 3 on the corresponding side and supported by the support baffles 3. The plate-shaped sealing gaskets 5 have sealing installation holes 5 at positions corresponding to the support holes 4 of the support baffles 3. The outer edge of each sealing installation hole 5 extends horizontally in the axial direction to form a sealing sleeve 6. Each sealing sleeve 6 and the plate-shaped sealing gasket 5 are integral structures. The sealing sleeve 6 is set as two or more layers of PTFE material film, and the thickness of each film is less than or equal to 0.The inner tube assembly is 5 mm thick. After being supported by two support baffles 3, both ends of the inner tube assembly are inserted into the corresponding sealing mounting holes 5. At the same time, the sealing sleeves 6 on the sealing mounting holes 5 are tightly attached to the corresponding inserted inner tube assembly. Each sealing sleeve 6 is provided with a sealing ring. A corrosion-resistant sealing ring fixing component is provided on the sealing ring 7. The corrosion-resistant sealing ring fixing component fixes the sealing ring 7. After the sealing ring 7 is fixed, a double sealing fit is formed between it and the sealing sleeve 6, which can seal the inner tube assembly and the outer base tube 1. When the inner tube assembly of this embodiment includes several inner tubes 26, several support holes 4 are provided on each of the two support baffles 3, and several sealing mounting holes 5 are provided on the plate-shaped sealing gasket 5. When the inner tube assembly of this embodiment includes nineteen inner tubes 26, nineteen support holes 4 are provided on each of the two support baffles 3, and nineteen sealing mounting holes 5 are provided on the plate-shaped sealing gasket 5. The positions of the inner tubes 26 and the positions of the support holes 4 correspond to the positions of the sealing mounting holes 5. Both ends of each inner tube 6 are inserted into the sealing mounting holes 5. Two support baffles 3 are fixedly installed in the corresponding support holes 4 and then inserted into the corresponding sealing installation holes 5. The sealing sleeves 6 on the sealing installation holes 5 are fitted onto the corresponding inserted inner tubes 26 and are tightly attached to the inner tubes 26. A sealing ring 7 is embedded in the sealing sleeve 6. The sealing ring 7 is fixed inside the sealing sleeve 6 by the anti-corrosion sealing ring fixing component. In this embodiment, each plate-shaped sealing gasket 54 is located on the outside of the corresponding support baffle 3. The anti-corrosion sealing ring fixing component includes an anti-corrosion ring fixing sleeve 50. The anti-corrosion ring fixing sleeve 50 can be made of stainless steel, glass, ceramic, Hastelloy, titanium alloy, zirconium alloy, or metal-coated PTFE. The sealing ring 7 is a circular sealing ring. The circular sealing ring is embedded in the anti-corrosion ring fixing sleeve 50. The anti-corrosion ring fixing sleeve 50 fixes and clamps the circular sealing ring by squeezing it. The circular sealing ring then presses the sealing sleeve 6 to achieve a double sealing structure on the outside of the inner tube 26, thereby sealing the outside of the support baffle 3. When fluid medium flows into the multiple inner tubes 26 in Example 6, the present invention can strengthen the sealing of the sealing sleeve 6 of the plate-shaped sealing gasket 5 by means of the fluid's own pressure, and improve the sealing performance at both ends of the sleeve structure equipment through the enhanced sealing of the circular sealing ring. It can also solve the pressure-bearing problem between the single or multiple inner tubes 26 and the sealing device, enabling them to withstand pressures of tens to hundreds of kilograms.
[0038] exist Figure 8In the above embodiments four, five and six, a tie rod reinforcement device is provided between the inner tubes. The tie rod reinforcement device includes a countersunk stud 40 and a support tube plate III 41. The inner hole of the support tube plate III 41 is fitted onto the corresponding inner tube 26. The head of the countersunk stud 40 is installed in two adjacent support tube plates III 41. A threaded sleeve 42 is embedded in the inner hole of the support tube plate III 41. An O-ring washer 43 is embedded in the threaded sleeve 42. A sealing gasket 44 is provided between the head of the countersunk stud 40 and the support tube plate III 41. The tail of the countersunk stud 40 is connected to one end of the tie rod 46 through an internal thread nut 45.
[0039] This invention can be applied to shell and tube heat exchangers, condensers, and reactors.
[0040] Not limited to this, any variations or substitutions conceived without inventive effort should be included within the scope of protection of this invention. Therefore, the scope of protection of this invention should be determined by the scope defined in the claims.
Claims
1. A self-pressurized side tube sheet sealing structure for a sleeve structure device, the sleeve structure device comprising an inner tube assembly and an outer base tube (1) from the inside out, the inner tube assembly being axially placed inside the outer base tube (1), both ends of the inner tube assembly being open, flanges (2) being provided on both sides of the outer base tube (1), a support baffle (3) being installed on each flange (2), the two support baffles (3) being symmetrically arranged, the positions of the support holes (4) provided on the surfaces of the two support baffles (3) corresponding to the positions of the inner tube of the inner tube assembly, the two ends of the inner tube assembly being inserted into the corresponding support holes (4) and fixedly installed in the support holes (4), so that the two ends of the inner tube assembly are supported by the two support baffles (3), characterized in that Each support baffle (3) has a plate-shaped sealing gasket (5) on its outer surface. The two plate-shaped sealing gaskets (5) are separately set from the corresponding support baffles (3). The plate-shaped sealing gaskets (5) are tightly attached to the support baffles (3) on the corresponding side and supported by the support baffles (3). The plate-shaped sealing gaskets (5) have sealing mounting holes (5) at positions corresponding to the support holes (4) of the support baffles (3). The outer edge of each sealing mounting hole (5) extends horizontally in the axial direction to form a sealing sleeve (6). Each sealing sleeve (6) and the plate-shaped sealing gasket (5) are... In the overall structure, the two ends of the inner tube assembly are supported by two support baffles (3) and then inserted into the corresponding sealing installation holes (5). At the same time, the sealing sleeve (6) on the sealing installation hole (5) is tightly attached to the corresponding inserted inner tube assembly. A sealing ring is provided on each sealing sleeve (6), and an anti-corrosion sealing ring fixing component is provided on the sealing ring (7). The anti-corrosion sealing ring fixing component fixes the sealing ring (7). After the sealing ring (7) is fixed, a double sealing fit is formed between it and the sealing sleeve (6), which can seal the inner tube assembly and the outer base tube (1).
2. The self-pressurized side tube sheet sealing structure of the sleeve structure equipment according to claim 1, characterized in that... When the inner tube assembly is set as a single inner tube (8), each of the two support baffles (3) is provided with a single support hole (4), and each of the two plate-shaped sealing gaskets (5) is provided with a single sealing installation hole (5). The two ends of the single inner tube (8) are respectively inserted into the support holes (4) of the two support baffles (3) and fixedly installed in the corresponding support holes (4), and then inserted into the corresponding sealing installation hole (5). The sealing sleeve (6) provided in the sealing installation hole (5) is fitted on the inserted single inner tube (8) and closely attached to the single inner tube (8). The sealing ring (7) is located outside the sealing sleeve (6). The anti-corrosion sealing ring fixing component fixes the sealing ring (7) and squeezes the sealing sleeve (6).
3. The self-pressurized side tube sheet sealing structure of the sleeve structure equipment according to claim 2, characterized in that... The anti-corrosion sealing ring fastener includes an anti-corrosion jacket (9), and the outer side of the flange (2) is provided with an installation groove I (10). The support baffle (3), the plate-shaped sealing gasket (5) and the anti-corrosion jacket (9) are installed in the installation groove I (10) from the inside to the outside. The anti-corrosion jacket (9) is fitted on the sealing sleeve (6). The sealing ring (7) is set as a circular sealing ring. The outside of the circular sealing ring is provided with an anti-corrosion sealing plate I (11). The anti-corrosion sealing plate I (11) is also located inside the anti-corrosion jacket (9). The anti-corrosion sealing plate I (11) is a glass plate and is anti-corrosion. An alloy plate or ceramic plate has a sealing ring fixing hole I (12) at the center of the anti-corrosion sealing plate I (11). After the circular sealing ring is inserted into the sealing ring fixing hole I (12), it is fixed and clamped in the anti-corrosion jacket (9) by the pressure of the anti-corrosion sealing plate I (11). After the circular sealing ring is clamped, the anti-corrosion jacket (9) and the sealing sleeve (6) achieve double sealing cooperation for the single inner tube (8). A fixing ring (13) is sleeved on the outside of the anti-corrosion sealing plate I (11). The anti-corrosion sealing plate I (11) is fixed by the fixing ring (13).
4. The self-pressurized side tube sheet sealing structure of the sleeve structure equipment according to claim 2, characterized in that... The anti-corrosion sealing ring fastener is set as anti-corrosion sealing plate II (14). The outer side of the flange (2) is provided with mounting groove II (15). The support baffle (3), plate-shaped sealing gasket (5) and anti-corrosion sealing plate II (14) are installed in the mounting groove II (15) from the inside to the outside. The anti-corrosion sealing plate II (14) is a glass plate, anti-corrosion alloy plate, ceramic plate or metal gasket (49) with anti-corrosion coating on the outside. A sealing ring fixing hole II (16) is opened in the center of the anti-corrosion sealing plate II (14). The sealing ring (7) is set as A circular sealing ring is fitted onto the sealing sleeve (6). The sealing ring fixing hole II (16) of the anti-corrosion sealing plate II (14) is fitted onto the circular sealing ring. The hole wall of the sealing ring fixing hole II (16) and the contact part of the circular sealing ring are provided with a chamfer (17). After the circular sealing ring is inserted into the sealing ring fixing hole II (16), it is squeezed by the chamfer (17) of the sealing ring fixing hole II (16) to fix and clamp the circular sealing ring. The circular sealing ring then presses the sealing sleeve (6) to achieve a double sealing structure for the single inner tube (8).
5. The self-pressurized side tube sheet sealing structure of the sleeve structure equipment according to claim 2, characterized in that... The sealing ring (7) is set as a strip sealing ring, the anti-corrosion sealing ring fixing component is set as a pressure plate (18), the sealing sleeve (6) is located in the mounting groove III (19) of the flange, the sealing sleeve (6) is divided into an upper sleeve body (21) and a lower sleeve body (22) through the middle partition (20), the strip sealing ring is located in the middle partition (20), the pressure plate (18) is embedded between the upper sleeve body (21) and the inner wall of the mounting groove III (19), the lower sleeve body (22) is fitted on the single inner tube (8), the pressure plate (18) presses the upper sleeve body (21) and the strip sealing ring downward in sequence, so that the strip sealing ring presses the lower sleeve body (21) to form a double sealing structure for the single inner tube (6).
6. The self-pressurized side tube sheet sealing structure of the sleeve structure equipment according to claim 4, characterized in that... The outer side of the anti-corrosion sealing plate II (14) is connected to a docking part (23). The inner support baffle (3), plate-shaped sealing gasket (5) and the upper part of the anti-corrosion sealing plate II (14) are connected to the inside of the mounting groove II (15) by a docking fixing ring (24). After the docking fixing ring (24) is inserted, the docking part (23) is clamped and fixed by the vertical stop (25) provided on the docking fixing ring (24).
7. The self-pressurized side tube sheet sealing structure of the sleeve structure equipment according to claim 1, characterized in that... When the inner tube assembly includes several inner tubes (26), several support holes (4) are provided on each of the two support baffles (3), and several sealing installation holes (5) are provided on the plate-shaped sealing gasket (5). The position of the inner tube (26) and the position of the support hole (4) correspond to the position of the sealing installation hole (5). The two ends of each inner tube (6) are inserted into the corresponding support hole (4) on the two support baffles (3) and fixedly installed in the support hole (4), and then inserted into the corresponding sealing installation hole (5). The sealing sleeve (6) on the sealing installation hole (5) is fitted on the corresponding inserted inner tube (26) and closely adheres to the inner tube (26). A sealing ring (7) is embedded in the sealing sleeve (6). The sealing ring (7) is fixed inside the sealing sleeve (6) by the anti-corrosion sealing ring fixing component.
8. The self-pressurized side tube sheet sealing structure of the sleeve structure equipment according to claim 7, characterized in that... Each plate-shaped sealing gasket (5) is located outside the corresponding support baffle (3). The anti-corrosion sealing ring fastener includes an outer sealing ring protection plate (27) and an inner sealing fixing plate I (28). The sealing ring (7) is a circular sealing ring. The circular sealing ring is embedded in the fixing hole I of the sealing fixing plate I (28). The sealing fixing plate I (28) fixes and clamps the circular sealing ring by squeezing it. The circular sealing ring then presses the sealing sleeve (6) to achieve the sealing of the inner tube (2). 6) The double sealing structure on the outside seals the outside of the support baffle (3). The outer sealing ring protection plate (27) confines the circular sealing ring inside the sealing sleeve (6). An inner support tube plate (29) is also provided on the inner side of the support baffle (3). An outer threaded iron screw sleeve (30) is fitted on the outside of the inner support tube plate (29). An inner circular sealing ring (31) is fitted on the outside of the outer threaded iron screw sleeve (30). The inner circular sealing ring (31) can seal the inside of the support baffle (6).
9. The self-pressurized side tube sheet sealing structure of the casing structure equipment according to claim 7, characterized in that... Each inner tube (26) is fitted with a bidirectional double self-sealing device, which includes an inner sealing device and an outer sealing device. A support baffle II (32) is provided between the inner sealing device and the outer sealing device. The outer sealing device includes two sealing sleeves (6) connected in series. An outer circular sealing ring (33) is embedded in each sealing sleeve (6). The outer circular sealing ring (33) is embedded in a fixing hole II provided in the outer sealing fixing plate II (34). The outer sealing fixing plate II (34) fixes and clamps the outer circular sealing ring (33) by squeezing it. The outer circular sealing ring (33) then presses the sealing sleeve (6) to achieve sealing of the outside of the inner tube (26). An outer sealing ring protection plate (36) is provided on the outside of the outer sealing fixing plate II (34). The outer sealing ring protection plate (36) limits the outer circular sealing ring (33). The outer ring of the outer sealing ring protection plate (36) is provided with a limiting plate (37) and the inner side of the limiting plate (37) presses against the outer ring of the outer sealing ring protection plate (36). The inner sealing device includes two sealing sleeves (6) connected in series. An inner circular sealing ring (38) is embedded in each sealing sleeve (6). The inner circular sealing ring (38) is embedded in the inner sealing fixing plate III (48) which has a fixing hole III. The sealing fixing plate III (48) fixes the inner circular sealing ring (38) by squeezing it. The inner circular sealing ring (38) then presses the sealing sleeve (6) to achieve sealing of the inner side of the inner tube (26). An inner sealing ring protection plate (39) is provided on the inner side of the inner sealing fixing plate (34). The inner sealing ring protection plate (39) limits the inner circular sealing ring (38) to the sealing sleeve (6).
10. The self-pressurized side tube sheet sealing structure of the sleeve structure equipment according to claim 7, characterized in that... A tie rod reinforcement device is provided between the inner tubes. The tie rod reinforcement device includes a countersunk stud (40) and a support tube plate III (41). The inner hole of the support tube plate III (41) is fitted onto the corresponding inner tube (26). The head of the countersunk stud (40) is installed in the two adjacent support tube plates III (41). A threaded sleeve (42) is embedded in the inner hole of the support tube plate III (41). An O-ring washer (43) is embedded in the threaded sleeve (42). A sealing gasket (44) is provided between the head of the countersunk stud (40) and the support tube plate III (41). The tail of the countersunk stud (40) is connected to one end of the tie rod (46) through an internal thread nut (45).
11. The self-pressurized side tube sheet sealing structure of the casing structure equipment according to claim 7, characterized in that... Each plate-shaped sealing gasket (54) is located on the outside of the corresponding support baffle (3). The anti-corrosion sealing ring fixing component includes an anti-corrosion ring fixing sleeve (50). The anti-corrosion ring fixing sleeve (50) can be made of stainless steel, glass, ceramic, Hastelloy, titanium alloy, zirconium alloy and metal-coated PTFE. The sealing ring (7) is a circular sealing ring. The circular sealing ring is embedded in the anti-corrosion ring fixing sleeve (50). The anti-corrosion ring fixing sleeve (50) fixes and clamps the circular sealing ring by squeezing it. The circular sealing ring then presses the sealing sleeve (6) to achieve a double sealing structure on the outside of the inner tube (26), thereby sealing the outside of the support baffle (3).
12. The self-pressurized side tube sheet sealing structure of the sleeve structure equipment according to claim 1, 2, 4, 6, 7 or 8, characterized in that... The plate-shaped sealing gasket (5) is made of soft PTFE material, and the sealing sleeve (6) is made of two or more layers of PTFE material film, with the thickness of each film being less than or equal to 0.5 mm.